Best Buy has the Western Digital Raptor 74GB WD740ADFDR 10,000 RPM SATA hard drive for $119.99. Free shipping, may be availabel in some stores for pickup.

Newegg has the Western Digital Raptor 150GB 3.5″ Serial ATA150 hard drive for $224.99 with a $30 mail in rebate. Free shipping.

FRYS.com has the Maxtor MXT 7H500F0 500GB 16 MB Cache SATA hard drive for $129.99 with free shipping. No mail in rebates and a 5 year warranty (unlike other Maxtor drives) makes this worth looking at. Limit 2 per person.

Newegg has the Seagate Barracuda 7200.9 500GB 3.5″ SATA 3.0Gb/s hard drive for $139.99 with $5.94 three day shipping. 5 year warranty as standard on Seagate drives.

Newegg has the Western Digital Caviar SE 250GB 3.5″ SATA 3.0Gb/s OEM hard drive for $69.99 with free shipping.